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Reduce the time of displaying progress bar in WebView

I have problem with reducing the time of displaying progress bar in WebView. For underesting a add image. enter image description here.
Where I can implement some thread of something to stop showing progress bar for one second, while my web running in WebView?
I tried implement thread before showing progress bar in onPageStarted, but it waiting for whole loading page, not only for loading progress bar.
We have very slow loading on web page, so we need showing to users one or two second loading page in webview without progressbar, after this time show "loading" progress bar.
If you have question, please ask me, we need quick respond to resolve this problem. I'm trying to find some solution, but nothing.
Thanks a lot!
There is my ChromeClien.class
public class MyWebChromeClient extends WebChromeClient {
private ProgressListener mListener;
public MyWebChromeClient(ProgressListener listener) {
mListener = listener;
}
#Override
public void onProgressChanged(WebView view, int newProgress) {
mListener.onUpdateProgress(newProgress);
super.onProgressChanged(view, newProgress);
}
public interface ProgressListener {
public void onUpdateProgress(int progressValue);
}}
There is MainActivity.class
public class MainActivity extends AppCompatActivity{
private WebView webview;
ProgressDialog prDialog;
String cekani;
#SuppressLint("SetJavaScriptEnabled")
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
CookieManager.getInstance().setAcceptCookie(true);
Boolean isFirstRun = getSharedPreferences("PREFERENCE", MODE_PRIVATE)
.getBoolean("isFirstRun", true);
if (isFirstRun) {
//show start activity
startActivity(new Intent(MainActivity.this, PrvniSpusteni.class));
}
getSharedPreferences("PREFERENCE", MODE_PRIVATE).edit()
.putBoolean("isFirstRun", false).commit();
if(KontrolaInternetu.isInternetAvailable(MainActivity.this)) //Vrátí hodnotu TRUE, pokud je připojení k internetu k dispozici
{
webview =(WebView)findViewById(R.id.webView);
//Nastavení webové stránky
webview.loadUrl(getString(R.string.url_aplikace));
webview.setWebViewClient(new MyWebViewClient());
//Puštění JavaScriptu pro web
webview.getSettings().setJavaScriptEnabled(true);
webview.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
webview.getSettings().setDomStorageEnabled(true);
webview.getSettings().setUseWideViewPort(true);
webview.setOverScrollMode(WebView.OVER_SCROLL_NEVER);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
WebSettings ws = webview.getSettings();
ws.setJavaScriptEnabled(true);
ws.setAllowFileAccess(true);
if (android.os.Build.VERSION.SDK_INT >= 21) {
CookieManager.getInstance().setAcceptThirdPartyCookies(webview, true);
}else {
CookieManager.getInstance().setAcceptCookie(true);
}
webview.setWebChromeClient(new WebChromeClient(){
#TargetApi(Build.VERSION_CODES.LOLLIPOP)
#Override
public void onPermissionRequest(final PermissionRequest request) {
request.grant(request.getResources());
}
});
if (Build.VERSION.SDK_INT>=Build.VERSION_CODES.ECLAIR) {
try {
Log.d(TAG, "Enabling HTML5-Features");
Method m1 = WebSettings.class.getMethod("setDomStorageEnabled", new Class[]{Boolean.TYPE});
m1.invoke(ws, Boolean.TRUE);
Method m2 = WebSettings.class.getMethod("setDatabaseEnabled", new Class[]{Boolean.TYPE});
m2.invoke(ws, Boolean.TRUE);
Method m3 = WebSettings.class.getMethod("setDatabasePath", new Class[]{String.class});
m3.invoke(ws, "/data/data/" + getPackageName() + "/databases/");
Method m4 = WebSettings.class.getMethod("setAppCacheMaxSize", new Class[]{Long.TYPE});
m4.invoke(ws, 1024*1024*8);
Method m5 = WebSettings.class.getMethod("setAppCachePath", new Class[]{String.class});
m5.invoke(ws, "/data/data/" + getPackageName() + "/cache/");
Method m6 = WebSettings.class.getMethod("setAppCacheEnabled", new Class[]{Boolean.TYPE});
m6.invoke(ws, Boolean.TRUE);
Log.d(TAG, "Enabled HTML5-Features");
}
catch (NoSuchMethodException e) {
Log.e(TAG, "Reflection fail", e);
}
catch (InvocationTargetException e) {
Log.e(TAG, "Reflection fail", e);
}
catch (IllegalAccessException e) {
Log.e(TAG, "Reflection fail", e);
}
}
}
else
{
//Zobrazení AlertDialogu pokud není připojení k internetu
runOnUiThread(new Runnable() {
#Override
public void run() {
if (!isFinishing()){
new AlertDialog.Builder(MainActivity.this)
.setTitle(getString(R.string.no_internet))
.setMessage(getString(R.string.internet))
.setCancelable(false)
.setIcon(R.drawable.icon)
.setPositiveButton(getString(R.string.ok), new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
finish();
System.exit(0);
}})
.setNegativeButton(getString(R.string.zrusit), new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
}})
.show();
}
}
});
}
}
//Při stisknutí tlačítka zpět se uživatel vrátí ve webview nazpět bez toho, aby aplikace spadla.
private final String TAG = MainActivity.class.getSimpleName();
// Progress bar - zobrazí se tehdy, pokud čekám na načítání stránky
private class MyWebViewClient extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
prDialog = new ProgressDialog(MainActivity.this);
prDialog.setIcon(R.drawable.icon);
prDialog.setMessage(getString(R.string.nacitani_webove_stranky));
prDialog.show();
}
#Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
if(prDialog!=null){
prDialog.dismiss();
}
}
}
//Při stisknutí tlačítka zpět se uživatel dostane zpět pouze ve webview
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if(event.getAction() == KeyEvent.ACTION_DOWN){
switch(keyCode)
{
case KeyEvent.KEYCODE_BACK:
if(webview.canGoBack() == true){
webview.goBack();
}else{
finish();
}
return true;
}
}
return super.onKeyDown(keyCode, event);
}
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (url.endsWith(".mp3")) {
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.parse(url), "audio/*");
view.getContext().startActivity(intent);
return true;
} else if (url.endsWith(".mp4") || url.endsWith(".3gp")) {
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.parse(url), "video/*");
view.getContext().startActivity(intent);
return true;
} else {
return true;
}}}

Hey bro, you don't necessarily need to implement threads for your
requirement. Firstly you can load the url in the webview and after a
particular time period you can start displaying progress bar. For
calling the progress bar after certain time period you can use
Handler.
private class MyWebViewClient extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
#Override
public void run() {
//Do something after 100ms
prDialog = new ProgressDialog(MainActivity.this);
prDialog.setIcon(R.drawable.icon);
prDialog.setMessage(getString(R.string.nacitani_webove_stranky));
prDialog.show();
}
}, 100);
}
#Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
if(prDialog!=null){
prDialog.dismiss();
}
}

how to redirect external link in webview in android

I have a problem with webview. I get url in onCreate method. In that page i have a login screen after click submit button user should redirect another, different website url and also go new tab. How can i do that? It cant perform any thing now.
#Override
public void onActivityCreated(#Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
if (getArguments() != null) {
tvScreenTitle.setText(getArguments().getString(CONTENT_TITLE));
}
new Handler().post(new Runnable() {
#Override
public void run() {
int logoMarginY = (int) (rlScreenHeader.getHeight() * 0.6f);
int logoMarginX = (int) (rlScreenHeader.getWidth() * 0.3f);
UIHelper.setMarginTop(btnBack, logoMarginY - btnBack.getHeight() / 2);
UIHelper.setMarginTop(tvScreenTitle, logoMarginY - tvScreenTitle.getHeight() / 2);
UIHelper.setMarginLeft(tvScreenTitle, logoMarginX);
}
});
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setUseWideViewPort(true);
webView.getSettings().setLoadWithOverviewMode(true);
webView.getSettings().setBuiltInZoomControls(true);
webView.getSettings().setSupportMultipleWindows(true);
webView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
webView.setWebChromeClient(new WebChromeClient() {
#Override
public boolean onCreateWindow(WebView view, boolean dialog, boolean userGesture, Message resultMsg)
{
webView.loadUrl(url);
return true;
}
public void onGeolocationPermissionsShowPrompt(String origin, GeolocationPermissions.Callback callback) {
callback.invoke(origin, true, false);
}
});
webView.setWebViewClient(webViewClient);
webView.loadUrl(this.url);
}
This is my onCreateView;
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_app_browser, container, false);
ButterKnife.bind(this, view);
UIHelper.setTypeface(rootFragment, GlobalApplication.getInstance().getTypeface());
return view;
}
boolean loadingFinished = true;
boolean redirect = false;
WebViewClient webViewClient = new WebViewClient() {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (!loadingFinished) {
redirect = true;
}
loadingFinished = false;
webView.loadUrl(url);
return true;
}
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
loadingFinished = false;
AppBrowserFragment.this.url = url;
tvAddressBarTitle.setText(url);
progressAddressBar.setVisibility(View.VISIBLE);
rlAddressBar.setVisibility(View.VISIBLE);
btnRefresh.setImageResource(R.drawable.browsericon_reloadover);
}
#Override
public void onPageFinished(WebView view, String url) {
if(!redirect){
loadingFinished = true;
}
if(loadingFinished && !redirect){
AppBrowserFragment.this.url = url;
if (StringUtils.isNotNullOrWhitespace(title)) {
tvAddressBarTitle.setText(title);
}
else {
tvAddressBarTitle.setText(view.getTitle());
}
progressAddressBar.setVisibility(View.INVISIBLE);
rlAddressBar.setVisibility(View.GONE);
btnRefresh.setImageResource(R.drawable.browsericon_reload);
btnBackBrowser.setImageResource(webView.canGoBack() ? R.drawable.browsericon_back : R.drawable.browsericon_backover);
btnForward.setImageResource(webView.canGoForward() ? R.drawable.browsericon_forward : R.drawable.browsericon_forwardover);
}
else {
redirect = false;
}
}
#Override
public void onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) {
handler.cancel();
}
};

Use condition vice versa what ever you want
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (url.contains("/shuffle")) {
mWebView.loadUrl(url);
return false;
} else {
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setData(Uri.parse(url));
startActivity(intent);
return true;
}
}

You need to start the new intent when the user click submits button, and you have to pass the new URL to the intent as a parameter using a putExtra method which is available in intent.
Intent intent = new Intent(this, CLASSNAME.class);
intent.putExtra(URL, <url>);
startActivity(intent);

WebView is not loading webpage

I am using WebView for loading a website. But it is very slow and is leaking when specific websites are loaded.
I am loading WebView with the following code.
#Override
protected void onNewIntent(Intent intent) {
if (intent.getStringExtra("url") != null) {
webView.loadurl(intent.getStringExtra("url"));
}
}
But I am calling webView.loadUrl(Config.URL); (Config.URL may contain same url as specified above) in onCreate() method after initializing WebView with the following.
this.webView = (WebView) findViewById(R.id.wv);
this.webView.getSettings().setJavaScriptEnabled(true);
this.webView.getSettings().setLoadsImagesAutomatically(true);
this.webView.getSettings().setDomStorageEnabled(true);
this.webView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
MyClient client = new MyClient(WebActivity.this, (ProgressBar)findViewById(R.id.progressBar));
webView.setWebViewClient(client);
Loading a from onCreate() is working fine (not fine, it's too slow). But
the same URL that is loading from onNewIntent() is not working!!!.
After I did this inonNewIntent() no URLs got loaded using
webView.loadurl() and the current page is getting immovable. ie. the
scrollbars are moving in WebView but page is not scrolling. I tested
the same URL in onCreate() and it is working.
For doing that I am passing url with
intent.putExtra("url", Config.URL+targetUrl);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_SINGLE_TOP);
with the pending intent from the notifications. Although it is working in some devices i.e Google Nexus. But it is not working on most of the phones.
I have
android:hardwareAccelerated="true"
Myclient
public class MyClient extends WebViewClient{
private Context context;
private Activity activity;
private Handler handler;
private Runnable runnable;
private ProgressBar viewBar;
private String ret,ret2;
public void setFirstLoad(boolean firstLoad) {
this.firstLoad = firstLoad;
}
private boolean firstLoad=false;
public MyClient(Activity activity, ProgressBar bar) {
this.context = activity.getApplicationContext();
this.activity = activity;
viewBar=bar;
handler=new Handler();
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
/*if (url.startsWith("tel:")) {
Intent intent = new Intent(Intent.ACTION_DIAL,
Uri.parse(url));
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
}else if(url.startsWith("http:") || url.startsWith("https:")) {
*//*view.setVisibility(View.GONE);
viewBar.setVisibility(View.VISIBLE);*//*
view.loadUrl(url);
}
return true;*/
if (Uri.parse(url).getHost().equals("www.somepage.com")) {
return false;
}
// Otherwise, the link is not for a page on my site, so launch another Activity that handles URLs
try {
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
Answers.getInstance().logShare(new ShareEvent()
.putContentId(Build.USER)
.putMethod(shareName(url))
.putContentName(contentDecode(url))
.putContentType("news_share"));
}catch (android.content.ActivityNotFoundException e){
Log.e("Activity not found",e.toString());
Toast.makeText(context,"Application not found",Toast.LENGTH_LONG).show();
}
return true;
}
#Override
public void onReceivedError(final WebView view, int errorCode, String description, final String failingUrl) {
//Clearing the WebView
try {
view.stopLoading();
} catch (Exception e) {
}
try {
view.clearView();
} catch (Exception e) {
}
if (view.canGoBack()) {
view.goBack();
}
view.loadUrl("about:blank");
//Showing and creating an alet dialog
AlertDialog.Builder alertDialog = new AlertDialog.Builder(activity);
alertDialog.setTitle("Error");
alertDialog.setMessage("No internet connection was found!");
alertDialog.setPositiveButton("Retry", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
view.loadUrl(failingUrl);
}
});
AlertDialog alert = alertDialog.create();
alert.show();
//Don't forget to call supper!
super.onReceivedError(view, errorCode, description, failingUrl);
}
#Override
public void onLoadResource(final WebView view, String url) {
super.onLoadResource(view, url);
//injectScriptFile(view, "js/script.js");
injectCSS(view,"css/style.css");
if (firstLoad){
firstLoad=false;
view.setVisibility(View.INVISIBLE);
viewBar.setVisibility(View.VISIBLE);
runnable=new Runnable() {
#Override
public void run() {
viewBar.setVisibility(View.GONE);
view.setVisibility(View.VISIBLE);
}
};
handler.postDelayed(runnable,2000);
}
// test if the script was loaded
// view.loadUrl("javascript:setTimeout(hideMe(), 200)");
}
/*#Override
public void onPageFinished(final WebView view, String url) {
//System.gc();
}*/
#Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
System.gc();
}
The question is: What is the problem when using loadurl() method in onNewIntent()?

Try this from where you loads webview
web.setWebViewClient(new WebViewClient() {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
return super.shouldOverrideUrlLoading(view, url);
}
});

You can use the webclient to handle the webview. Here I include the javascript with loading.
String aboutURL="YOUR URL";
final ProgressDialog pd = ProgressDialog.show(, "", "Please wait", true);
WebSettings settings=Webview.getSettings();
settings.setJavaScriptEnabled(true);
settings.setAppCacheEnabled(true);
settings.setDomStorageEnabled(true);
settings.setLoadsImagesAutomatically(true);
settings.setDatabaseEnabled(true);
settings.setRenderPriority(WebSettings.RenderPriority.HIGH);
settings.setCacheMode(WebSettings.LOAD_NO_CACHE);
settings.setSupportZoom(true);
settings.setBuiltInZoomControls(true);
Webview.setWebViewClient(new WebViewClient() {
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
Toast.makeText(activity, description, Toast.LENGTH_SHORT).show();
}
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon)
{
pd.show();
}
#Override
public void onPageFinished(WebView view, String url) {
pd.dismiss();
}
});
Webview.loadUrl(aboutURL);
Here Loading is processed based on network

Use Handler to post a delay action as below will fix this, but I don't known why.
new Handler().post(webView.loadurl(url));

How to load the data in webview page by page in android

I am using webview to display the html data.It is working fine if the data is less(less than 1 mb)..I am using following code
mDecryptDataWv.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
DebugLog.i(TAG, "Processing webview url click...");
view.loadUrl(url);
return true;
}
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
// TODO Auto-generated method stub
//showProgressDialog();
DebugLog.i(TAG, "************onPageStarted **************");
}
#Override
public void onPageFinished(WebView view, String url) {
DebugLog.i(TAG, "************onPageFinished **************");
if (mProgressDialog != null) {
if (mProgressDialog.isShowing()) {
DebugLog.i(TAG, "mProgressDialog ::::::stopping");
mProgressDialog.dismiss();
mProgressDialog = null;
}
}
If the data is more then 1MB it is taking more time to complete the loading.so my intention is to load the data page by page upon user scrolling with progress dialog..Can anyone has idea?

// I used this class and my code is working fime at my side please try this may be it will help you
public class WebViewActivity extends Activity {
private WebView webview;
private static final String TAG = "Main";
private ProgressDialog progressBar;
private TextView header_maintext;
private TextView headeroptiontext;
private RelativeLayout back;
private String url_string="http://www.google.com";
private String header_maintext_string="Your text";
/** Called when the activity is first created. */
#SuppressLint("SetJavaScriptEnabled") #Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.webview_layout);
webview = (WebView)findViewById(R.id.webview01);
header_maintext= (TextView)findViewById(R.id.header_maintext);
header_maintext.setText(header_maintext_string);
headeroptiontext = (TextView)findViewById(R.id.headeroptiontext);
headeroptiontext.setVisibility(View.GONE);
WebSettings settings = webview.getSettings();
settings.setJavaScriptEnabled(true);
webview.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
webview.getSettings().setLoadWithOverviewMode(true);
webview.getSettings().setUseWideViewPort(true);
back = (RelativeLayout) findViewById(R.id.back_layout);
back.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0)
{
// TODO Auto-generated method stub
if(webview.canGoBack() == true)
{
webview.goBack();
}
else
{
finish();
}
}
});
final AlertDialog alertDialog = new AlertDialog.Builder(this).create();
progressBar = ProgressDialog.show(WebViewActivity.this, "My application", "Loading...");
webview.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
public void onPageFinished(WebView view, String url) {
Log.i(TAG, "Finished loading URL: " +url);
if (progressBar.isShowing()) {
progressBar.dismiss();
}
}
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
Toast.makeText(WebViewActivity.this, "Oh no! " + description, Toast.LENGTH_SHORT).show();
alertDialog.setTitle("Error");
alertDialog.setMessage(description);
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
return;
}
});
alertDialog.show();
}
});
webview.loadUrl(url_string);
}
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if(event.getAction() == KeyEvent.ACTION_DOWN){
switch(keyCode)
{
case KeyEvent.KEYCODE_BACK:
if(webview.canGoBack() == true){
webview.goBack();
}else{
finish();
}
return true;
}
}
return super.onKeyDown(keyCode, event);
}
}

Webview email link (mailto)

I have a view and view the site has malito code to send email.
When I open the link opens in an error.
I want that when I open the link opens Gmail app or another email application.
Thanks to all helpers.
public class teacher extends Activity implements OnClickListener {
WebView webView;
final Activity activity = this;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.getWindow().requestFeature(Window.FEATURE_PROGRESS);
setContentView(R.layout.teacher);
webView = (WebView) findViewById(R.id.webView145);
webView.getSettings().setJavaScriptEnabled(true); webView.loadUrl("https://dl.dropboxusercontent.com/u/233211/%D7%A8%D7%A9%D7%99%D7%95%D7%9F/iWebKit%20demo/ther.html");
webView.setWebChromeClient(new WebChromeClient() {
public void onProgressChanged(WebView view, int progress) {
activity.setTitle("Loading...");
activity.setProgress(progress * 100);
if (progress == 100)
activity.setTitle(R.string.app_name);
} });
webView.setWebViewClient(new WebViewClient() {
#Override
public void onReceivedError(WebView view, int errorCode,
String description, String failingUrl) {
// Handle the error
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true; } });}
public void onBackPressed() {
if (webView.canGoBack()) {
webView.goBack();
} else {
Intent B = new Intent(this, MainActivity.class);
startActivity(B);
}}
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN) {
switch (keyCode) {
case KeyEvent.KEYCODE_BACK:
if (webView.canGoBack() == true) {
webView.goBack();
} else {
finish();
}return true;} }
return super.onKeyDown(keyCode, event);
}
#Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
}}

You have to create a subclass of WebViewClient and override mailto URL loading. Example:
public class MyWebViewClient extends WebViewClient {
private final WeakReference<Activity> mActivityRef;
public MyWebViewClient(Activity activity) {
mActivityRef = new WeakReference<Activity>(activity);
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (url.startsWith("mailto:")) {
final Activity activity = mActivityRef.get();
if (activity != null) {
MailTo mt = MailTo.parse(url);
Intent i = newEmailIntent(activity, mt.getTo(), mt.getSubject(), mt.getBody(), mt.getCc());
activity.startActivity(i);
view.reload();
return true;
}
} else {
view.loadUrl(url);
}
return true;
}
private Intent newEmailIntent(Context context, String address, String subject, String body, String cc) {
Intent intent = new Intent(Intent.ACTION_SEND);
intent.putExtra(Intent.EXTRA_EMAIL, new String[] { address });
intent.putExtra(Intent.EXTRA_TEXT, body);
intent.putExtra(Intent.EXTRA_SUBJECT, subject);
intent.putExtra(Intent.EXTRA_CC, cc);
intent.setType("message/rfc822");
return intent;
}
}
Then you have to set this custom WebViewClient to your WabView:
webView.setWebViewClient(new MyWebViewClient(activity);

You should update your's WebViewClient with the following:
#SuppressWarnings("deprecation")
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
proceedUrl(view, Uri.parse(url))
return true;
}
#TargetApi(Build.VERSION_CODES.N)
#Override
public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
proceedUrl(view, request.getUrl());
return true;
}
private void proceedUrl(View view, Uri uri){
if (uri.toString().startsWith("mailto:")) {
startActivity(new Intent(Intent.ACTION_SENDTO, uri));
} else if (uri.toString().startsWith("tel:")) {
startActivity(new Intent(Intent.ACTION_DIAL, uri));
} else {
view.loadUrl(uri.toString());
}
}

Note : - After Android Nougat shouldOverrideUrlLoading is Deprecated
You need to use shouldOverrideUrlLoading along with shouldOverrideUrlLoading for better support.
Also, you might want to check if URL have mailto: or tel:, which are used in HTML5 to trigger mail client and phone dial respectively.
A complete solution will look like this now
#SuppressWarnings("deprecation")
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (url.startsWith("mailto:")) {
//Handle mail Urls
startActivity(new Intent(Intent.ACTION_SENDTO, Uri.parse(url)));
} else if (url.startsWith("tel:")) {
//Handle telephony Urls
startActivity(new Intent(Intent.ACTION_DIAL, Uri.parse(url)));
} else {
view.loadUrl(url);
}
return true;
}
#TargetApi(Build.VERSION_CODES.N)
#Override
public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
final Uri uri = request.getUrl();
if (uri.toString().startsWith("mailto:")) {
//Handle mail Urls
startActivity(new Intent(Intent.ACTION_SENDTO, uri));
} else if (uri.toString().startsWith("tel:")) {
//Handle telephony Urls
startActivity(new Intent(Intent.ACTION_DIAL, uri));
} else {
//Handle Web Urls
view.loadUrl(uri.toString());
}
return true;
}